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Author |
Clutton-Brock, T.H.; Greenwood, P.J.; Powell, R.P. |
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Title |
Ranks and relationships in Highland ponies and Highland Cows |
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Journal Article |
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Year |
1976 |
Publication |
Zeitschrift für Tierpsychologie |
Abbreviated Journal |
Z. Tierpsychol. |
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Volume |
41 |
Issue |
2 |
Pages |
202-216 |
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Keywords |
Agonistic Behavior; Animals; *Cattle; Female; Grooming; *Horses; Male; *Social Dominance; Spatial Behavior |
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Abstract |
Recent studies of primates have questioned the importance of dominance hierarchies in groups living under natural conditions. In a herd of Highland ponies and one of Highland cattle grazing under free-range conditions on the Isle of Rhum (Inner Hebrides) well defined hierarchies were present. The provision of food produced a marked increase in the frequency of agonistic interactions but had no effect on the rank systems of the two herds. While rank was clearly important in affecting the distribution of agonistic interactions, it was poorly related to behaviour in non-agonistic situations. |
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0044-3573 |
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PMID:961125 |
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refbase @ user @ |
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661 |
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Author |
Sinha, A. |
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Title |
Knowledge acquired and decisions made: triadic interactions during allogrooming in wild bonnet macaques, Macaca radiata |
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Journal Article |
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Year |
1998 |
Publication |
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences |
Abbreviated Journal |
Philos Trans R Soc Lond B Biol Sci |
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Volume |
353 |
Issue |
1368 |
Pages |
619-631 |
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Keywords |
Aggression; Animals; Cognition; Computer Simulation; Decision Making; Evolution; Female; Grooming; Logistic Models; Macaca radiata/*psychology; *Social Behavior; Social Dominance |
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Abstract |
The pressures of developing and maintaining intricate social relationships may have led to the evolution of enhanced cognitive abilities in many nonhuman primates. Knowledge of the dominance ranks and social relationships of other individuals, in particular, is important in evaluating one's position in the rank hierarchy and affiliative networks. Triadic interactions offer an excellent opportunity to examine whether decisions are taken by individuals on the basis of such knowledge. Allogrooming supplants among wild female bonnet macaques (macaca radiata) usually involved the subordinate female of a grooming dyad retreating at the approach of a female dominant to both members of the dyad. In a few exceptional cases, however, the dominant member of the dyad retreated; simple non-cognitive hypotheses involving dyadic rank differences and agonistic relationships failed to explain this phenomenon. Instead, retreat by the dominant individual was positively correlated with the social attractiveness of her subordinate companion (as measured by the duration of grooming received by the latter from other females in the troop). This suggests that not only does an individual evaluate relationships among other females, but does so on the basis of the amount of grooming received by them. Similarly, the frequency of approaches received by any female was correlated with her social attractiveness when she was the dominant member of the dyad, but not when she was the subordinate. This indicated that approaching females might be aware of the relative dominance ranks of the two allogrooming individuals. In logistic regression analyses, the probability of any individual retreating was found to be influenced more by her knowledge of her rank difference with both the other interactants, rather than by their absolute ranks. Moreover, information about social attractiveness appeared to be used in terms of correlated dominance ranks. The nature of knowledge acquired by bonnet macaque females may thus be egotistical in that other individuals are evaluated relative to oneself, integrative in that information about all other interactants is used simultaneously, and hierarchical in the ability to preferentially use certain categories of knowledge for the storage of related information from other domains. |
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National Centre for Biological Sciences, TIFR Centre, Bangalore, India |
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0962-8436 |
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PMID:9602536 |
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Call Number |
Equine Behaviour @ team @ |
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4362 |
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Author |
Allen, C. |
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Title |
Assessing animal cognition: ethological and philosophical perspectives |
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Journal Article |
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Year |
1998 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
76 |
Issue |
1 |
Pages |
42-47 |
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Keywords |
Agriculture; Animal Welfare; Animals; Animals, Domestic/physiology/*psychology; Behavior, Animal/*physiology; Cognition/*physiology; *Ethology; *Philosophy; Research |
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Abstract |
Developments in the scientific and philosophical study of animal cognition and mentality are of great importance to animal scientists who face continued public scrutiny of the treatment of animals in research and agriculture. Because beliefs about animal minds, animal cognition, and animal consciousness underlie many people's views about the ethical treatment of nonhuman animals, it has become increasingly difficult for animal scientists to avoid these issues. Animal scientists may learn from ethologists who study animal cognition and mentality from an evolutionary and comparative perspective and who are at the forefront of the development of naturalistic and laboratory techniques of observation and experimentation that are capable of revealing the cognitive and mental properties of nonhuman animals. Despite growing acceptance of the ethological study of animal cognition, there are critics who dispute the scientific validity of the field, especially when the topic is animal consciousness. Here, a proper understanding of developments in the philosophy of mind and the philosophy of science can help to place cognitive studies on a firm methodological and philosophical foundation. Ultimately, this is an interdisciplinary task, involving scientists and philosophers. Animal scientists are well-positioned to contribute to the study of animal cognition because they typically have access to a large pool of potential research subjects whose habitats are more controlled than in most field studies while being more natural than most laboratory psychology experiments. Despite some formidable questions remaining for analysis, the prospects for progress in assessing animal cognition are bright. |
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Department of Philosophy, Texas A&M University, College Station 77843-4237, USA |
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0021-8812 |
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PMID:9464883 |
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Call Number |
Equine Behaviour @ team @ |
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2750 |
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Author |
Urcuioli, P.J.; DeMarse, T.B.; Zentall, T.R. |
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Title |
Transfer across delayed discriminations: II. Differences in the substitutability of initial versus test stimuli |
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Journal Article |
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Year |
1998 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
24 |
Issue |
1 |
Pages |
47-59 |
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Keywords |
Animals; Behavior, Animal; Columbidae/physiology; Discrimination Learning/*physiology; Pattern Recognition, Visual/*physiology; Reinforcement (Psychology); Retention (Psychology)/physiology |
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Abstract |
In 2 experiments, pigeons were trained on, and then transferred to, delayed simple discriminations in which the initial stimuli signalled reinforcement versus extinction following a retention interval. Experiment 1 showed that discriminative responding on the retention test transferred to novel test stimuli that had appeared in another delayed simple discrimination but not to stimuli having the same reinforcement history off-baseline. By contrast, Experiment 2 showed that performances transferred to novel initial stimuli whether they had been trained on-baseline or off-baseline. These results suggest that the test stimuli in delayed simple discriminations acquire control over responding only in the memory task itself. On the other hand, control by the initial stimuli, if coded as outcome expectancies, does not require such task-specific training. |
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Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47907-1364, USA. uche@psych.purdue.edu |
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0097-7403 |
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Notes |
PMID:9438965 |
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no |
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Call Number |
refbase @ user @ |
Serial |
253 |
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Author |
de Waal, F.B. |
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Title |
Food transfers through mesh in brown capuchins |
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Journal Article |
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Year |
1997 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
111 |
Issue |
4 |
Pages |
370-378 |
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Keywords |
Animals; Cebus/*psychology; *Feeding Behavior; Female; Food Preferences/psychology; Male; *Motivation; Sex Factors; *Social Behavior; Social Environment |
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Abstract |
Capuchin monkeys (Cebus apella) share food even if their partner is behind a mesh restraint. Pairs of adult capuchins were moved into a test chamber in which 1 monkey received cucumber pieces for 20 min and the other received apple slices during the following 20 min. Tolerant transfers of food occurred reciprocally among females: The rate of transfer from Female B to A in the second test phase varied with the rate from Female A to B in the first test phase. Several social mechanisms may explain this reciprocity. Whereas this study does not contradict cognitively complex explanations (e.g., mental record keeping of given and received food), the results are consistent with a rather simple explanation: that food sharing reflects a combination of affiliative tendency and high tolerance. The study suggests that sharing mechanisms may be different for adult male capuchins, with males sharing food more readily and less discriminatingly than females. |
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Yerkes Primate Center, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu |
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0735-7036 |
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Notes |
PMID:9419882 |
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no |
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Call Number |
refbase @ user @ |
Serial |
198 |
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Author |
de Waal, F.B.; Seres, M. |
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Title |
Propagation of handclasp grooming among captive chimpanzees |
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Journal Article |
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Year |
1997 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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Volume |
43 |
Issue |
4 |
Pages |
339-346 |
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Keywords |
Animals; Family Relations; Female; *Grooming; Learning; Male; Pan troglodytes/*psychology; *Social Behavior |
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Abstract |
A grooming posture previously reported for two wild chimpanzee (Pan troglodytes) communities developed spontaneously in a captive group of the same species. This offered a unique opportunity to follow the propagation of a new social custom. The posture consists of two partners grasping hands--either both right hands or both left hands--and raising the arms in an A-frame above their heads while mutually grooming with their free hands. The propagation of this pattern was followed over a 5 year period. In the beginning, handclasps were always initiated by the same adult female. This female initiated the posture mainly with her adult female kin. In subsequent years, these relatives became frequent participants in the posture with each other as well as with nonrelatives. Over the years the posture increased in frequency and duration and spread to the majority of adults and also to a few adolescents and older juveniles. The pattern persisted after removal of the apparent originator. |
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Yerkes Primate Center, Emory University, Atlanta, GA 30329, USA. dewaal@emory.edu |
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0275-2565 |
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PMID:9403098 |
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no |
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Call Number |
refbase @ user @ |
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202 |
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Author |
Church, R.M. |
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Title |
Quantitative models of animal learning and cognition |
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Journal Article |
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Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
23 |
Issue |
4 |
Pages |
379-389 |
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Animals; *Behavior, Animal; *Cognition; Computer Simulation; *Learning; *Models, Psychological; *Models, Theoretical |
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This article reviews the prerequisites for quantitative models of animal learning and cognition, describes the types of models, provides a rationale for the development of such quantitative models, describes criteria for their evaluation, and makes recommendations for the next generation of quantitative models. A modular approach to the development of models is described in which a procedure is considered as a generator of stimuli and a model is considered as a generator of responses. The goal is to develop models that, in combination with many different procedures, produce sequences of times of occurrence of events (stimuli and responses) that are indistinguishable from those produced by the animal under many experimental procedures and data analysis techniques. |
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Department of Psychology, Brown University, Providence, Rhode Island 02912, USA. russell_church@brown.edu |
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0097-7403 |
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PMID:9335132 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2778 |
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Author |
Joffe, T.H.; Dunbar, R.I. |
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Title |
Visual and socio-cognitive information processing in primate brain evolution |
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Journal Article |
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Year |
1997 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
264 |
Issue |
1386 |
Pages |
1303-1307 |
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Keywords |
Animals; Brain/anatomy & histology/*physiology; Cognition/physiology; *Evolution; Geniculate Bodies/anatomy & histology/physiology; Humans; Mental Processes/physiology; Neocortex/physiology; Primates/anatomy & histology/*physiology/*psychology; *Social Behavior; Visual Cortex/anatomy & histology/physiology |
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Abstract |
Social group size has been shown to correlate with neocortex size in primates. Here we use comparative analyses to show that social group size is independently correlated with the size of non-V1 neocortical areas, but not with other more proximate components of the visual system or with brain systems associated with emotional cueing (e.g. the amygdala). We argue that visual brain components serve as a social information 'input device' for socio-visual stimuli such as facial expressions, bodily gestures and visual status markers, while the non-visual neocortex serves as a 'processing device' whereby these social cues are encoded, interpreted and associated with stored information. However, the second appears to have greater overall importance because the size of the V1 visual area appears to reach an asymptotic size beyond which visual acuity and pattern recognition may not improve significantly. This is especially true of the great ape clade (including humans), that is known to use more sophisticated social cognitive strategies. |
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School of Life Sciences, University of Liverpool, UK |
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0962-8452 |
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PMID:9332015 |
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2095 |
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Author |
Pennisi, E. |
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Title |
Schizophrenia clues from monkeys |
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1997 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
277 |
Issue |
5328 |
Pages |
900 |
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Animals; Antipsychotic Agents/pharmacology; Behavior, Animal/drug effects; *Cercopithecus aethiops; Clozapine/pharmacology; Cognition/drug effects; *Disease Models, Animal; Dopamine/*metabolism; Excitatory Amino Acid Antagonists/pharmacology; Memory/drug effects; Phencyclidine/*pharmacology; Prefrontal Cortex/*metabolism; Schizophrenia/chemically induced/drug therapy/*metabolism; Schizophrenic Psychology |
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0036-8075 |
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PMID:9281070 |
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Equine Behaviour @ team @ |
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2844 |
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Author |
Swartz, K.B. |
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Title |
What is mirror self-recognition in nonhuman primates, and what is it not? |
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Journal Article |
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Year |
1997 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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818 |
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64-71 |
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Animals; *Awareness; *Behavior, Animal; *Ego; Primates/*psychology |
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Department of Psychology, Lehman College of the City University of New York, Bronx 10468, USA |
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0077-8923 |
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PMID:9237465 |
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Equine Behaviour @ team @ |
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4135 |
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